$310+ Cheap flights from Washington to Belfast Intl (BFS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
ene. 14 — ene. 211
1 adult, Economy
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Best flights from Washington to Belfast IntlDiscover carefully curated flight deals from Washington to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 15, 2025.
Discover carefully curated flight deals from Washington to Belfast Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 15, 2025.
This Mytrip deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/282:35 pmSEA - BFS
2 stops17h 35mMultiple Airlines
mié. 2/47:55 amBFS - SEA
2 stops17h 05mMultiple Airlines
Deal found 12/14![Multiple Airlines logo]()
$667
This Mytrip deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/292:35 pmSEA - BFS
2 stops23h 45mMultiple Airlines
jue. 2/56:30 amBFS - SEA
2 stops18h 30mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$679
This Mytrip deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/263:40 pmSEA - BFS
2 stops23h 30mMultiple Airlines
dom. 5/106:10 amBFS - SEA
2 stops22h 18mMultiple Airlines
Deal found 12/15![Multiple Airlines logo]()
$940
This Mytrip deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/29:50 amPDX - BFS
3 stops23h 10mMultiple Airlines
lun. 3/168:55 pmBFS - PDX
3 stops28h 35mMultiple Airlines
Deal found 12/13![Multiple Airlines logo]()
$1,167
Find flight deals from Washington to Belfast Intl
Keep the following information in mind while searching for Washington to Belfast Intl flight deals. Data was last updated diciembre 15, 2025.
Round-trip from | $667 (Mytrip) |
|---|---|
One-way from | $310 (Kiwi.com) |
Popular in | December |
Cheapest in | April |
Average price | $1,583 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Belfast Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 15, 2025.
Use the filters below to find and compare flights from Washington to Belfast Intl Airport that are best for you.
Fly from
Washington
Fly to
Belfast Intl
Route
Depart
Return
Price
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
mié. 1/28
2:35 pm-4:10 pm
2 stops17h 35m
Belfast Intl
mié. 2/4
7:55 am-5:00 pm
2 stops17h 05m
$667
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
jue. 1/29
2:35 pm-10:20 pm
2 stops23h 45m
Belfast Intl
jue. 2/5
6:30 am-5:00 pm
2 stops18h 30m
$679
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
dom. 4/26
3:40 pm-11:10 pm
2 stops23h 30m
Belfast Intl
dom. 5/10
6:10 am-8:28 pm
2 stops22h 18m
$940
PortlandBelfast
PDX - BFS
PDXBFS
Portland
lun. 3/2
9:50 am-5:00 pm
3 stops23h 10m
Belfast Intl
lun. 3/16
8:55 pm-6:30 pm
3 stops28h 35m
$1,167
SeattleBelfast
SEA - BFS
SEABFS
Seattle/Tacoma Intl
lun. 3/23
9:35 pm-6:50 pm
2 stops38h 15m
$310
Best time to book a flight from Washington to Belfast Intl
Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Washington with our price prediction graph.
Estimated round-trip price
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Cheapflights Insights
Everything you need to know about your flight from Washington to Belfast Intl Airport
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